Not 100% perfect, but very close!

The mounting of the filter by means of magnets is already extremely practical and really easy to install. Even with an aluminum housing, which comprises only still with a bit of flair must adhere to additional magnetic strips. Here I would have liked that this has recesses for the screw holes on the fan bracket. So this would not be partially covered and an adjustment would have been even easier. Important is definitely a level surface. (Who looks up at the manufacturer's site once, incidentally, can still find some special sizes for diverse housing).

I use the filter for a fan on top of the case of Lian-Li PC-C60. Which reminds me another small shortcoming noticed. The weight of the filter and the air suction down to ensure that the filter grinds on the fan. You can correct this by carefully sliding the frame from the inside out and so the Netzt properly "pushed too far". This problem may then indeed be something special and could be remedied by an additional grid for the fan. To understand is still adds that the frame of the filter is not rigid, but is made of flexible plastic.

Overall, however, in any case replace a strong buy recommendation and I think about the two plant-filter now also, since they are only extremely cumbersome to clean.